TY - JOUR
AU - Mitri, F. G.
AB - Acoustic waves may force a suspended object in the wavepath to spin by exerting a radiation torque. Generally, this torque depends on how the incident wave is scattered and absorbed by the object. We derive a general formula for the Cartesian components of the acoustic radiation torque produced by an arbitrary incident beam on an object of any geometrical shape in a nonviscous fluid. To illustrate the method, we calculate the acoustic radiation torque produced by a zero- and a first-order Bessel beam on an absorbing sphere in the off-axis configuration. Unexpectedly, the results show that some radiation torque components reverse their directions depending on the beam offset and the sphere size factor.
TI - Radiation torque produced by an arbitrary acoustic wave
JF - EPL
DO - 10.1209/0295-5075/97/54003
DA - 2012-03-01
UR - https://www.deepdyve.com/lp/iop-publishing/radiation-torque-produced-by-an-arbitrary-acoustic-wave-MsRUQeyAS0
SP - 54003
VL - 97
IS - 5
DP - DeepDyve
ER -